Cast Film Extrusion – Bajaj
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Cast Film Extrusion
Cast Film Extrusion

Film Application

Cast Film

Cast films are thin, flat sheets of plastic material produced through a specific extrusion process. In this method, molten polymer is extruded through a flat die (also known as a slot die) to form a continuous, uniform film. The molten film is then rapidly cooled on a metal casting roll, resulting in a high-quality, glossy sheet with consistent thickness.

Key Steps in Cast Film Extrusion:

  1. Melt Extrusion: Polymers are melted through a slot or flat die (extruded) to form a thin molten film.
  2. Die System: The molten polymer travels through a flat die system to adopt its final flat film shape. The die system includes the die itself and, if required, a feedblock for coextrusion or simply the die for mono-layer extrusion.
  3. Cooling: The molten film is rapidly cooled on a metal casting roll, which solidifies it into a continuous sheet.
  4. Takeoff and Windup: The film is then pulled away from the casting roll and wound onto a roll for further processing or use.

Cast Film In PP & PE

PP Base Cast Film (CPP)

PP-based cast film refers to thin, flat sheets of plastic material produced through a specific extrusion process using polypropylene (PP) as the primary polymer.

PE Base Cast Film(CPE)

PE-based cast film refers to thin, flat sheets of plastic material produced through a specific extrusion process using polyethylene (PE) as the primary polymer.

Film Application

Advantages of Cast
Film Extrusion

Cast film extrusion is a versatile process that produces high-quality
plastic films suitable for various applications. Whether it’s food
packaging,industrial films, or medical products, cast films play
a vital role in our everyday lives.

Uniform Thickness

Cast films exhibit consistent thickness across their entire surface.

Smooth Surface Finish

The cooling process ensures a high-quality, glossy surface.

Versatility

Cast films find applications in packaging, labels, laminates, and more.

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